Finding the Fourth Proportional to 2,460.90, 3,688.56 and 998.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.90 : 3,688.56 = 998.22 : x
2. Step 2: Convert to fraction form
   2,460.90/3,688.56 = 998.22/x
3. Step 3: Cross multiply
   2,460.90x = 3,688.56 × 998.22
4. Step 4: Simplify right side
   2,460.90x = 3,681,994.36
5. Step 5: Solve for x
   x = 3,681,994.36/2,460.90
6. Step 6: Final answer
   x = 1,496.20